| 1 | /****************************************************************************
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| 2 | **
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| 3 | ** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
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| 4 | ** All rights reserved.
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| 5 | ** Contact: Nokia Corporation ([email protected])
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| 6 | **
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| 7 | ** This file is part of the examples of the Qt Toolkit.
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| 8 | **
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| 9 | ** $QT_BEGIN_LICENSE:BSD$
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| 10 | ** You may use this file under the terms of the BSD license as follows:
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| 11 | **
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| 12 | ** "Redistribution and use in source and binary forms, with or without
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| 13 | ** modification, are permitted provided that the following conditions are
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| 14 | ** met:
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| 15 | ** * Redistributions of source code must retain the above copyright
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| 16 | ** notice, this list of conditions and the following disclaimer.
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| 17 | ** * Redistributions in binary form must reproduce the above copyright
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| 18 | ** notice, this list of conditions and the following disclaimer in
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| 19 | ** the documentation and/or other materials provided with the
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| 20 | ** distribution.
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| 21 | ** * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor
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| 22 | ** the names of its contributors may be used to endorse or promote
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| 23 | ** products derived from this software without specific prior written
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| 24 | ** permission.
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| 25 | **
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| 26 | ** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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| 27 | ** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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| 28 | ** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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| 29 | ** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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| 30 | ** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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| 31 | ** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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| 32 | ** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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| 33 | ** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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| 34 | ** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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| 35 | ** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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| 36 | ** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
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| 37 | ** $QT_END_LICENSE$
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| 38 | **
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| 39 | ****************************************************************************/
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| 40 |
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| 41 | #ifndef DIAGRAMSCENE_H
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| 42 | #define DIAGRAMSCENE_H
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| 43 |
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| 44 | #include <QGraphicsScene>
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| 45 | #include "diagramitem.h"
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| 46 | #include "diagramtextitem.h"
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| 47 |
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| 48 | QT_BEGIN_NAMESPACE
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| 49 | class QGraphicsSceneMouseEvent;
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| 50 | class QMenu;
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| 51 | class QPointF;
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| 52 | class QGraphicsLineItem;
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| 53 | class QFont;
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| 54 | class QGraphicsTextItem;
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| 55 | class QColor;
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| 56 | QT_END_NAMESPACE
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| 57 |
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| 58 | //! [0]
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| 59 | class DiagramScene : public QGraphicsScene
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| 60 | {
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| 61 | Q_OBJECT
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| 62 |
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| 63 | public:
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| 64 | enum Mode { InsertItem, InsertLine, InsertText, MoveItem };
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| 65 |
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| 66 | DiagramScene(QMenu *itemMenu, QObject *parent = 0);
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| 67 | QFont font() const
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| 68 | { return myFont; }
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| 69 | QColor textColor() const
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| 70 | { return myTextColor; }
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| 71 | QColor itemColor() const
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| 72 | { return myItemColor; }
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| 73 | QColor lineColor() const
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| 74 | { return myLineColor; }
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| 75 | void setLineColor(const QColor &color);
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| 76 | void setTextColor(const QColor &color);
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| 77 | void setItemColor(const QColor &color);
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| 78 | void setFont(const QFont &font);
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| 79 |
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| 80 | public slots:
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| 81 | void setMode(Mode mode);
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| 82 | void setItemType(DiagramItem::DiagramType type);
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| 83 | void editorLostFocus(DiagramTextItem *item);
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| 84 |
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| 85 | signals:
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| 86 | void itemInserted(DiagramItem *item);
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| 87 | void textInserted(QGraphicsTextItem *item);
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| 88 | void itemSelected(QGraphicsItem *item);
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| 89 |
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| 90 | protected:
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| 91 | void mousePressEvent(QGraphicsSceneMouseEvent *mouseEvent);
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| 92 | void mouseMoveEvent(QGraphicsSceneMouseEvent *mouseEvent);
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| 93 | void mouseReleaseEvent(QGraphicsSceneMouseEvent *mouseEvent);
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| 94 |
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| 95 | private:
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| 96 | bool isItemChange(int type);
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| 97 |
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| 98 | DiagramItem::DiagramType myItemType;
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| 99 | QMenu *myItemMenu;
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| 100 | Mode myMode;
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| 101 | bool leftButtonDown;
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| 102 | QPointF startPoint;
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| 103 | QGraphicsLineItem *line;
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| 104 | QFont myFont;
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| 105 | DiagramTextItem *textItem;
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| 106 | QColor myTextColor;
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| 107 | QColor myItemColor;
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| 108 | QColor myLineColor;
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| 109 | };
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| 110 | //! [0]
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| 111 |
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| 112 | #endif
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